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Obtaining of coumarone-indene resins based on light fraction of coal tar 1. coumarone-indene resins with carboxy groups

Michael Bratychak1, Olena Astakhova1, Olena Shyshchak1, Jacek Namiesnik2, Oresta Ripak1, Serhiy Pyshyev1
1 Lviv Polytechnic National University 12, S.Bandery St., 79013 Lviv, Ukraine 2 Gdansk University of Technology, 11/12 G. Narutowicza St., 80233 Gdansk, Poland
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Coumarone-indene resins (CIR) with carboxy groups were synthesized via cooligomerization of unsaturated compounds presented in light fraction of coal tar and its fraction boiling out within 423–463 K with the addition of such industrial monomers as styrene, maleic anhydride, glycidyl methacrylate and methacrylic acid. 2,2`-Azobis(2-methylpropionitrile) in the form of 0.2 M solution in toluene was used as an initiator. The effect of monomers nature, initiator amount, temperature and reaction time on the yield and characteristics of resulted CIR has been determined. The structure of the synthesized CIR was confirmed by IR-spectroscopy. The conversion of unsaturated compounds during synthesis of CIR with carboxy groups was determined by gas-liquid chromatography.

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